In all the batteries (well...must be over a dozen different packs) that I've charged on my charger...the "too-low to be recognized" thing only happened once. The guy was ready to ship his charger/battery back and buy a new one. We cross checked with my batteries and chargers and at first his battery ("brand new" off the shelf) seemed to be a dud. Just for kicks we plugged it into an old wall charger and left it charging while we chatted. Then tried it again and he never had any problems with it after that.
The thing is that you never can tell how long the pack has been sitting on the manufacturer's shelf...before it sits with the distributor...before it sits with the vendor/store.
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